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Outer Space & Universe

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Outer Space & Universe

Space, also known as outer space, is the near-vacuum between celestial bodies. It is where everything (all of the planets, stars, galaxies and other objects) is found.

On Earth, space begins at the Kármán line (100 km above sea level). This is where Earth's atmosphere is said to stop and outer space begins. This is not a firm boundary but is a convention used by scientists and diplomats.

Items in space are free to move back and forth; up and down; and left and right. These three dimensions are what make 3D space. Items also move forward through time, which is sometimes called the fourth dimension.

The majority of space contains very little matter and so most of it is a vacuum. Scientists do not know how big space is but we do know that space is extremely big, and is always expanding.

According to the big bang theory, all matter and energy in the Universe was compressed into a very small space. Then it exploded and started expanding. Space is still growing in size today; this means the distance from one galaxy to distant galaxies is getting longer.

Gravity is the force that keeps the Moon in orbit around the Earth and the planets in orbit around the Sun. Gravity can stretch and bend space similar to how a heavy ball placed on a stretched sheet of rubber will cause the rubber to stretch. The scientist who discovered that space can bend is named Albert Einstein. How gravity bends space is part of his theory of general relativity.

Astronauts, Cosmonauts, Taikonauts and Spationauts

An astronaut is any person who is trained by NASA to travel and perform tasks in space. Although the space traveler may not necessarily be a United States citizen, each astronaut does go through a rigorous training regiment by the National Aeronautics and Space Administration. Other space travelers go by other names then astronaut depending on their country of origin.

In the United States, astronaut is derived from the Greek words ástron (star) and nautis (sailor). While, in Russia, a space traveler goes by the name космонавт (English: cosmonaut), which is derived from the Greek words kosmos (universe) and nautis (sailor). Westerners call a space traveler from China a taikonaut, based on the 1998 writings of Chiew Lee Yik and Chen Lan where the term tàikōng (great emptiness), Chinese for “space”. In China, the term yuháng yuán (universe navigator) is used for space traveler.

Only the United States of America (United States), Russia (earlier, the Union of Soviet Socialist Republics), and the People’s Republic of China (China) have sent manned spacecraft into space. Other countries have assisted these countries by sending their own space travelers on space missions. For instance, a French space traveler is called a spationaut (from the French word spationaute), which is derived from the Latin spatium (space) and Greek nautis (sailor). (plural in Greek nautes = sailors)

 

  • 04:40 Tropical Storm Gordon could become a Hurricane IMHO

    Tropical Storm Gordon could become a Hurricane IMHO

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  • 12:06 Tropical Storm Gordon forms over Florida & heads into the Gulf Coast

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  • 14:21 Hurricane Florence update & Mother Nature will continue to pick on East Coast

    Hurricane Florence update & Mother Nature will continue to pick on East Coast

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  • 10:27 Hurricane Florence is a potential MAJOR threat to the East Coast

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  • 10:20 Gulf Coast. You have 48 Hours Before Tropical Depression 7 Hits. Prepare Now.

    Gulf Coast. You have 48 Hours Before Tropical Depression 7 Hits. Prepare Now.

    by admin Added 460 Views / 0 Likes

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  • 08:20 4 Hurricanes in the Gulf & Atlantic Ocean a possibility. Florence a Threat!

    4 Hurricanes in the Gulf & Atlantic Ocean a possibility. Florence a Threat!

    by admin Added 374 Views / 0 Likes

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  • 14:38 4 Hurricanes could hit the USA in the next 2 Weeks - It is possible.

    4 Hurricanes could hit the USA in the next 2 Weeks - It is possible.

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  • 08:18 Deja Vu.

    Deja Vu.

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  • 11:41 MAJOR Hurricane Trouble brewing for East Coast & Gulf of Mexico & Hawaii

    MAJOR Hurricane Trouble brewing for East Coast & Gulf of Mexico & Hawaii

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  • 20:46 A Professional* Look at this Crazy Hurricane Peak Season Situation

    A Professional* Look at this Crazy Hurricane Peak Season Situation

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    This is part 2 of our look at how wild things can get as the Pacific & Atlantic are becoming very active and waking up. The Gulf is gonna get a soaking regardless of system designation. God Bless Everyone. Stay Cool. Thttps://www.paypal.me/THORnewsTshirts

  • 10:36 Hurricane & Tropical Storm & Storm Action Everywhere USA. BE PREPARED. HAVE A PLAN

    Hurricane & Tropical Storm & Storm Action Everywhere USA. BE PREPARED. HAVE A PLAN

    by admin Added 379 Views / 0 Likes

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  • 22:52 SCIENCE says Women smell More Invisible Ghosts than Men do.

    SCIENCE says Women smell More Invisible Ghosts than Men do.

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  • 02:07 Space to Ground: Potential Game Changer: 08/31/2018

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    by admin Added 335 Views / 0 Likes

    NASA's Space to Ground is your weekly update on what's happening aboard the International Space Station. Got a question or comment? Use #spacetoground to talk to us.Learn more about the important research being operated on Station:https://www.nasa.gov/iss

  • 00:44 Saturn’s Northern Auroras Swirl in Hubble Imagery

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    by admin Added 358 Views / 0 Likes

    A series of spectacular images from the Hubble Space Telescope show whirling auroras at the north pole of Saturn.Credit: NASA, ESA & L. Lamy / mash mix: Space.com

  • 00:44 Fireball Over Australia Captured by Multiple Cameras

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    by admin Added 366 Views / 0 Likes

    See spectacular eyewitness videos of the dazzling fireball that lit up the skies of Perth, Australia on Aug. 28, 2018. -- Full Story: https://www.space.com/41679-australia-fireball-photos-videos-august-2018.html Credit: Space.com / footage courtesy: Perth

  • 03:29 Preparing America for Deep Space Episode 18 On The Move

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    by admin Added 364 Views / 0 Likes

    Big progress continues to be made in 2018 for NASA’s Orion, Space Launch System (SLS), and Exploration Ground Systems (EGS) programs. Teams across America and in Europe are developing and building the spacecraft, rocket, and infrastructure necessary to se

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  • 01:49 Meet my New Girlfriend.

    Meet my New Girlfriend.

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  • 15:42 The ISS is Leaking!!! NASA is attempting to fix it with Rags & Junk.

    The ISS is Leaking!!! NASA is attempting to fix it with Rags & Junk.

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